Home / 990,738.57-1,367,637.75-668,884.62

Finding the Fourth Proportional to 990,738.57, 1,367,637.75 and 668,884.62

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Solution

The fourth proportional to 990,738.57, 1,367,637.75 and 668,884.62 is: 923,343.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    990,738.57 : 1,367,637.75 = 668,884.62 : x
  2. Step 2: Convert to fraction form
    990,738.57/1,367,637.75 = 668,884.62/x
  3. Step 3: Cross multiply
    990,738.57x = 1,367,637.75 × 668,884.62
  4. Step 4: Simplify right side
    990,738.57x = 914,791,856,706.41
  5. Step 5: Solve for x
    x = 914,791,856,706.41/990,738.57
  6. Step 6: Final answer
    x = 923,343.34

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.